A webpage featuring pictures of Uncle Sam in a 15th century suit of armor with the words "I want you to come back to Europe!" is one of the worst nightmares of the anti-immigrant movement.

"We're angry enough to say the problem is that Europeans forced their way into our continent, maybe they should go home," said Olin Tezcatlitoca, who runs the site. "This is outrageous for us who are indigenous people to be told we cannot migrate on our own land."

Tezcatlitoca is the leader of a tiny group called the "Mexica Movement," which advocates on behalf of "indigenous Americans," or those people without European ancestry.

"Kind of like the Jews wanted to take their land back after 2,000 years," said Tezcatlitoca. "We're saying we lost this land 150 years ago in a clearly unjust war, in a clearly racist war against our people."

Groups like Tezcatlitoca's are taking fire from pro-immigrant groups such as the National Council of La Raza (NCLR) and observers of the immigration debate.